Tempstar Heat Pump in Greater Vancouver — complete owner’s guide

Your outdoor unit is running, steam is rolling off the top of it, and the fan just stopped for a few minutes. That is almost always a defrost cycle, not a breakdown. It is also the single most common reason people call us about a Tempstar heat pump in January.

Heat pumps behave differently from the gas furnaces most Lower Mainland homes grew up with. They run longer, at lower output, and the supply air off a heat pump feels cooler on the back of your hand than furnace air even while the house is holding temperature perfectly. None of that is a fault. It is a different machine doing the same job a different way.

This guide covers what actually matters for a Tempstar heat pump on the coast: how it should be sized for your house, where the outdoor unit belongs when you are three blocks from salt water, what maintenance is yours and what is not, what a real service visit includes, and how to tell a nuisance symptom from something that needs a licensed technician at your door.

Where a Tempstar heat pump sits in the lineup, and what the tiers really change

Tempstar splits its heat pump offering into tiers, and the marketing names matter less than three mechanical questions: how the compressor modulates, how the outdoor fan is driven, and how the equipment talks to the thermostat.

Single-stage models run flat out or not at all. They are simple, they have the fewest failure points, and in a small, tight townhouse they are perfectly adequate. Two-stage models spend most of the heating season on low, which is exactly what you want here, because our winter is a long stretch of mild damp weather rather than a short brutal cold snap. Variable-capacity models trim output continuously and pair with matched indoor equipment and a communicating thermostat, which buys you steadier room temperatures and quieter operation, at the cost of a system where the parts are less interchangeable.

That last point is worth understanding before you buy. A communicating system is a set, not a collection. Swapping in a mismatched indoor coil or a generic thermostat later can cost you the modulation you paid for.

Efficiency for any of these is published as SEER2 for cooling and HSPF2 for heating. Do not trust a number quoted in a sales conversation or repeated on a blog. Look up your exact outdoor model paired with your exact indoor unit in the manufacturer’s spec sheet or the AHRI directory, because a single outdoor unit can produce very different rated performance depending on what it is matched to.

Why the coastal climate is unusually kind to heat pumps, and where it is not

Heat pump output falls as outdoor temperature falls. That is physics, and it is the reason heat pumps struggled to catch on in colder parts of the country. Here, it barely bites. A typical winter in Burnaby, Richmond or the North Shore spends most of its hours in the low single digits above freezing, which is comfortably inside the range where a modern heat pump still produces useful heat and still costs less to run than resistance heat.

The local complication is not cold. It is moisture. Our air carries a lot of water, and when a coil sits below freezing in humid air, frost builds fast and often. That means more defrost cycles than a drier climate would produce, and defrost cycles are a normal part of the machine’s life rather than a symptom.

The second complication is the spread across the region. Vancouver’s West End and Abbotsford do not share a winter. Push east and up in elevation toward the eastern Fraser Valley and you pick up more sub-zero hours, more real snow, and more nights where supplemental heat earns its keep. A system designed for a Kitsilano duplex is not automatically right for a house in Mission.

And the shoulder seasons matter more than people expect. Long, cool, wet Octobers and Marches are exactly where a modulating heat pump beats everything else, because it can run gently for hours instead of slamming on and off.

Sizing: the load calculation, and why bigger is a downgrade

The most expensive mistake in residential HVAC is oversizing, and it happens most often when someone matches new equipment to the tonnage of the old equipment. That old number was frequently a guess too.

A proper sizing exercise is a room-by-room heat loss and heat gain calculation. It accounts for wall and attic insulation, window area and glazing type, orientation, air leakage, ceiling height, and the design temperature for your specific municipality. The output is a load figure, and the equipment is chosen to meet it with a sane margin, not to bury it.

Oversize a heat pump and you get short cycles. The compressor starts, satisfies the thermostat quickly, and shuts down before the system has stabilized. You lose humidity control in summer, you lose the long steady runs that make a heat pump efficient in winter, and you wear the compressor with start-stop cycles that are far harder on it than continuous running.

The older housing stock across East Vancouver, New Westminster and central Surrey adds a second layer. Many of these homes were retrofitted with ducting sized for a high-temperature furnace pushing small volumes of very hot air. A heat pump moves more air at a lower temperature. The same ducts can become a bottleneck, showing up as noise at the registers, poor distribution to the far bedrooms, and pressures that shorten equipment life.

Any contractor who quotes a heat pump without measuring your house and looking at your ductwork is guessing. Ask to see the calculation.

Ducted, ductless, and dual fuel: choosing the configuration

The outdoor unit is only half the decision. What it connects to indoors changes how the system feels day to day.

A ducted Tempstar heat pump pairs the outdoor unit with an indoor air handler or with an existing furnace’s blower and a matched coil. If your home already has decent ducts in reasonable condition, this is usually the cleanest path: one thermostat, no wall cassettes, whole-home distribution, and the same filter location you already know.

Ductless is the answer for homes that never had ducts, and there are plenty of them here, from 1950s Vancouver bungalows with hydronic baseboards to laneway houses and older strata units with electric baseboard heat. Indoor heads are placed per zone, which gives you genuinely independent room control. The trade-off is visible equipment on the walls, filters in multiple places, and condensate lines that need routing to a legal drain point.

Dual fuel keeps a gas furnace in the picture and hands the heating job back and forth. The heat pump carries the mild hours, and below a switchover point the furnace takes over. In a home that already has a healthy furnace and a gas connection, this is often the most practical retrofit. It also means gas appliance work, which in British Columbia has to be done by a TSBC-certified gas fitter. That is not paperwork. It is the licence that makes the combustion side legal and safe.

Hybrid setups need their switchover logic configured deliberately, not left at a default.

Installation day: permits, electrical, and what commissioning actually means

A heat pump install is an electrical job, a refrigeration job, an airflow job, and sometimes a gas job stacked into one visit. Skipping any layer shows up later.

Permits come first. Most Lower Mainland municipalities require a mechanical or building permit for the installation, and electrical work needs its own permit and a qualified electrician. If the project touches gas appliances or gas piping, that work falls under TSBC gas certification. Get the permit numbers in writing. They matter for resale, for insurance questions, and for any rebate program paperwork.

The electrical side is where retrofits stall. Older panels across the region are often close to full. A heat pump needs a dedicated circuit sized to the equipment’s data plate, a disconnect within sight of the outdoor unit, and proper bonding. Sometimes that means a panel upgrade or a load calculation to prove the existing service can carry it. Better to find that out during the quote than on install day.

The refrigeration work decides the system’s lifespan. Lines get evacuated to pull moisture and non-condensables out before charging. Brazed joints get flowed with nitrogen so the inside of the pipe does not oxidize. Charge is set by the manufacturer’s method for that model, not by feel.

Commissioning is the part good installers do and rushed installers skip: measuring airflow, checking static pressure, verifying temperature split, confirming defrost operation, running the thermostat through heating, cooling and auxiliary, and leaving you with the readings written down.

Siting the outdoor unit: salt air, noise bylaws, strata, and drainage

Where the outdoor unit goes will affect its lifespan more than any brand decision you make.

If you live near open water in White Rock, Steveston, Tsawwassen or along the North Shore waterfront, salt-laden air is corroding aluminum fins and steel cabinet fasteners every single day. Give the unit as much shelter from prevailing salt spray as the site allows, keep it off the ground, and rinse the outdoor coil with plain water more often than an inland homeowner would. Some manufacturers offer coated-coil options for coastal exposure. Ask about it before installation, because retrofitting protection is not really a thing.

Noise is the other siting constraint, and it is a legal one. Municipalities across Metro Vancouver have noise bylaws with defined limits at the property line, and stratas commonly add their own rules about where equipment can be mounted, what it can be attached to, and how it must be screened. Get written approval from your strata council before anything is installed on common property or a limited common property patio. Retrofitting a noise problem after a neighbour complains is expensive and awkward.

Drainage is quietly critical. A heat pump in heating mode sheds water during defrost, and in a cold snap that water can freeze into a block under the unit. Mount the unit on a raised pad or brackets with clear space beneath, keep it away from the drip line of a roof edge, and never let it sit in a puddle or a garden bed that holds water.

Leave the clearances the manual specifies on all sides.

Defrost cycles: what is normal and what is not

In heating mode the outdoor coil is the cold side, so it collects frost. Periodically the system reverses itself briefly, sends hot refrigerant out to the coil, melts the ice, and returns to heating. That is defrost.

What you will see and hear during a normal defrost: a distinct whoosh or clunk as the reversing valve shifts, the outdoor fan stopping while the compressor keeps running, steam rising off the unit as ice turns to water and vapour, and possibly a brief drop in supply air temperature indoors. If your system has electric backup, it may energize for a few minutes to keep the air from feeling cold. Then the fan restarts and normal heating resumes. Typically it lasts a few minutes.

In our humidity, several defrosts per hour during a cold, wet stretch can be entirely reasonable. That is the machine doing its job in the climate it is installed in.

What is not normal: ice building up over the whole cabinet and staying there through multiple cycles, ice forming a solid mound underneath and jamming the fan, defrost that fires constantly with no useful heating in between, or a unit that never defrosts at all while the coil disappears under a sheet of ice.

Do not chip at ice with anything metal. You will puncture a coil or a sensor lead and turn a service call into a repair. If you need to intervene, turn the system off at the thermostat, let it thaw, and get a technician out to find the cause: a failed defrost sensor, a stuck reversing valve, a drainage problem, or low charge.

Thermostat strategy: setbacks, staging, and auxiliary heat lockout

The habits that worked with a gas furnace will cost you money on a heat pump.

Deep setbacks are the classic example. Dropping the house eight degrees overnight and demanding it back at 6 a.m. asks the system for a fast recovery, and fast recovery on a heat pump usually means calling in the electric auxiliary heat, which is the expensive way to make warmth. Small setbacks of a degree or two, or none at all, generally win. Let the machine run long and gentle.

Auxiliary and emergency heat are not the same thing. Auxiliary is the backup element assisting the heat pump. Emergency heat shuts the heat pump off entirely and runs on backup alone, which is a mode for when the outdoor unit has actually failed, not a mode for a chilly evening. If your thermostat has been sitting on emergency heat since a cold snap last year, that is worth checking today.

Smart thermostats need to be told they are running a heat pump. A thermostat configured as a conventional furnace will control staging and backup incorrectly. Confirm the equipment type, the number of stages, the reversing valve orientation setting, and the compressor minimum off time. A communicating Tempstar system should generally be paired with its matched communicating control rather than a third-party stat.

Set a balance point or lockout so backup heat only engages below a chosen outdoor temperature. Left wide open, the elements will help out on days the compressor could have handled alone, and you will see it on the bill.

The maintenance you should do yourself, and how often

Filters first, because more heat pump service calls trace back to a dirty filter than to any component failure.

Check the filter monthly and change it when it looks loaded, not on a calendar. Homes with pets, wood floors, construction nearby, or a wildfire smoke season running the fan hard will load filters faster. Match the filter size and thickness the system was designed for. A very restrictive high-MERV filter jammed into a slot designed for a low-pressure-drop one starves airflow, which drops capacity, freezes coils in cooling and drives up static pressure.

Keep the outdoor unit clear. Cottonwood fluff in early summer, cedar needles all year, and blackberry canes are the local offenders. Maintain open space around the cabinet and above it, cut back planting, and do not build a decorative enclosure around it without checking the clearance requirements.

Rinse the outdoor coil with a garden hose, unit off, water flowing gently from the inside out where you can reach it. No pressure washer. Fins bend under pressure and bent fins choke airflow permanently. Coastal homes benefit from doing this more often to wash salt off.

Watch the drainage. Ductless indoor heads and indoor coils both produce condensate, and a slow drain shows up as staining, dripping, or a musty smell. Keep the pathway to the drain clear.

In winter, clear snow away from the outdoor unit and make sure the base is not sitting in ice. Also test your CO alarms if you have any gas appliance in the home.

What a professional annual service visit should include

Once a year, ideally in early autumn before the heating season loads up, a technician should go through the system properly. Here is what that visit looks like when it is done right.

Electrical: tighten and inspect terminations, check contactor contacts for pitting, test capacitor values against the rating, measure compressor and fan motor amp draw against the data plate, and verify the disconnect and circuit are correct and safe.

Refrigeration: measure operating pressures and temperatures, calculate superheat or subcooling using the method the manufacturer specifies for that model, and evaluate whether the charge is actually correct rather than assuming. Inspect for oil traces at joints and service ports, which is how leaks announce themselves.

Airflow: measure total external static pressure across the air handler, inspect the blower wheel for dust loading, check the indoor coil face for restriction, and confirm temperature rise or split falls in the manufacturer’s range.

Controls and safeties: run a full defrost cycle, verify the reversing valve shifts cleanly, check the defrost sensor, confirm auxiliary heat staging and lockout behave as configured, and read any stored fault history off the control board.

Physical: check the pad or brackets for settling, look for corrosion on the cabinet and coil, inspect line set insulation because sun-degraded insulation is a real efficiency loss, and confirm condensate drainage flows.

You should get written readings, not a sticker. Numbers you can compare to next year’s visit are how you catch a slow decline before it becomes a failure in January.

Troubleshooting in the right order, before you call anyone

There is a sequence a technician runs through mentally, and you can do the first half of it yourself in ten minutes.

Start at the thermostat. Is it calling for heat? Is it in the right mode, not stuck on emergency heat or fan-only? Do the batteries need replacing? A surprising number of no-heat calls end here.

Then power. Check the breaker for the outdoor unit and the breaker for the indoor air handler or furnace, because they are separate circuits. Look at the outdoor disconnect box beside the unit. Check the service switch on the furnace or air handler, which looks like a light switch and gets flipped by accident during garage cleanouts more often than you would think.

Then airflow. Pull the filter and look at it. If it is grey and matted, replace it, and give the system twenty minutes.

Then the outdoor unit itself. Is it iced over? Is anything blocking it? Is the fan turning when the compressor runs?

Then the drain. A blocked condensate line can trip a float switch that shuts the system down deliberately.

If all of that checks out and you still have no heat, stop. Measuring refrigerant, testing capacitors, and opening a live control panel are technician jobs, and there is stored energy in that cabinet that can hurt you.

If you smell gas or a CO alarm sounds in a home with gas appliances, do not troubleshoot anything. Leave the house, then call the gas utility and a licensed technician from outside.

Fault codes and indicator lights: reading them without guessing

Modern heat pumps report faults, usually as a blinking LED on the outdoor or indoor control board, or as a code on a communicating thermostat display. Those codes are genuinely useful. They are also brand, model and year specific, and the meanings are not universal.

So read the actual code off your actual unit and verify it against the documentation for that unit. The legend is often printed on a label inside the service panel or the blower door, and the installation and service manual for your model number covers the full list. Never rely on a code meaning you found in a general article, including this one, because a two-flash pattern on one platform can mean something completely unrelated on another.

What is worth knowing is the categories faults fall into, because they tell you how urgent it is. Broadly you will run into pressure faults on the high or low side, which point at airflow, charge or a blockage. Compressor protection faults, which the control uses to shut things down before damage occurs. Sensor faults, where a thermistor or its wiring has failed. Defrost faults. Communication faults between the outdoor board, indoor board and thermostat, which are often a wiring or connector issue rather than a dead component. And on dual-fuel systems, furnace-side ignition, flame sense or venting faults, which live on the combustion side.

Write the code down along with the conditions when it appeared and how many times. Then reset once. Do not reset repeatedly to keep a system running. Lockouts exist to protect equipment and people, and bypassing a safety is never the answer.

Refrigerant, airflow, and why “just top it up” is the wrong request

A heat pump is a sealed system. It does not consume refrigerant the way a car consumes oil. If the charge is low, refrigerant left through a leak, and adding more without finding the leak just funds the same repair again next year.

So when a system is underperforming, the honest process is to find the leak first. That means an electronic leak detector, soap solution on suspect joints, sometimes dye and a return visit, and inspecting the usual suspects: service valves and ports, brazed joints, the indoor coil, and line set rub points where a pipe has been vibrating against a joist for a decade. Coastal corrosion adds outdoor coil pinholes to the list.

Refrigerant handling is regulated in Canada. Venting it is illegal, recovery equipment is required, and the technician needs the appropriate certification. Also, systems on newer low-GWP refrigerant blends have different handling requirements and different tooling than older ones, and mixing refrigerants ruins a system.

Here is the part homeowners rarely hear: the majority of “low on gas” complaints we investigate are actually airflow problems. A collapsed flex duct, a return that is undersized for the equipment, a blower wheel packed with dust, a filter nobody changed, or a closed damper in a crawlspace will all produce the same symptoms as low charge. Weak heat, long run times, ice on the coil.

That is why a good diagnosis measures static pressure and temperature split before anyone touches a gauge port. Charging a system to compensate for bad airflow ends with a dead compressor.

Lifespan, repair or replace, and the paperwork worth keeping

A well-installed, maintained heat pump on the coast has a long working life, but the honest answer to “how long” depends far more on installation quality, airflow and coastal exposure than on the badge.

The repair-or-replace decision usually turns on a few things at once. What failed, and is it a wear item like a capacitor or contactor, or a major component like the compressor or a coil? How old is the system, and is it on a refrigerant that is being phased down? Is the failure a symptom of something structural, like ducts that have been strangling the equipment since day one? And is this the second or third significant repair in a short span? One expensive repair on an otherwise healthy system is usually worth doing. A third one on an aging system is a warning.

Costs are driven by factors, not by a number you can look up: sizing, efficiency tier, whether ductwork or electrical service needs work, line set length and routing, permits, and site access. We give a free written no-obligation estimate so you are comparing real scope, not guesses.

On paperwork: register the equipment with the manufacturer within their stated window, because unregistered warranty terms are usually shorter. Keep the invoice, the permit numbers, the model and serial numbers, and every service record in one place. Warranty and rebate programs both ask for them.

For CleanBC and FortisBC program requirements, check current eligibility and documentation rules with the program directly, since terms change. Questions on your own system? Call HeatLand at (604) 330-3812.

Quick Checklist

• Photograph the model and serial number plate on your outdoor unit and store it with your service records.
• Check the air filter monthly and replace it when loaded, using the size and thickness the system was designed for.
• Keep at least the manufacturer’s specified clearance around and above the outdoor unit, clear of cedar needles, cottonwood fluff and blackberry.
• Rinse the outdoor coil with a gentle garden hose, never a pressure washer, and more often if you are near salt water.
• Confirm your thermostat is configured as a heat pump, with the correct stages and reversing valve setting.
• Set an auxiliary heat lockout or balance point so backup elements do not run on mild days.
• Stop using deep overnight setbacks; small adjustments let the compressor carry the load instead of the elements.
• Verify the outdoor unit sits raised with free drainage beneath it and is not frozen into a puddle.
• Book one professional service visit a year, before heating season, and ask for written measured readings.
• Test CO alarms if any gas appliance is in the home, and never bypass a safety lockout to keep equipment running.

Frequently Asked Questions

Reviewed by the HeatLand Heating & Cooling team — licensed, insured, TSBC-certified HVAC contractor serving Metro Vancouver & the Fraser Valley since 1999. Error codes, specifications, pricing and rebate programs vary by model and change over time; confirm details against your unit’s own manual, a written quote, and the manufacturer or CleanBC/FortisBC. If you smell gas or your CO alarm sounds, leave the home and call the gas utility and a licensed technician from outside.